xine is a free multimedia player. It plays back CDs, DVDs, and VCDs. It also decodes multimedia files like AVI, MOV, WMV, and MP3 from local disk drives, and displays multimedia streamed over the Internet. It interprets many of the most common multimedia formats available--and some of the most uncommon formats, too. All those features come in a reusable library (xine-lib) which can easily be embedded in your applications.

LiVES is a simple to use yet powerful video
effects, editing, conversion, and playback system
aimed at the digital video artist and VJ. It runs under Linux, BSD, Mac OS X/Darwin, IRIX, and openMosix. It is frame and sample accurate, can handle
almost all types of video, and is fully extendable
through plugins and the included plugin builder
tool. It can also be controlled remotely using OSC.

Dvbnrc is a TCP Daemon written in Perl that allows you to remotely control a Nokia Mediamaster running DVB2000 through a serial nullmodem cable. It allows you to telnet to the box, get the list of available TV/radio channels, change tha channel, show the current one, or change the text of the LCDisplay.

SERVID is an intellegent RS232 video terminal
(4x20 character display) in one chip; the Ubicom
(formerly Scenix) SX microcontroller. Using only
some resistors, the program generates NTSB or PAL
video signals via software (bit banged).

LikeTelevision's Dynamic Ad Casting software is an automated video
insertion solution that manages content programming. It allows
on-demand video content to be controlled to create a television-like
experience through insertion of commercial advertising spots. It
features total control: the administrator can design and customize the
Playlist Template in any way desired. Different spots and commercials
can be inserted with total control and then applied universally to
even the largest libraries of video clips. Demographic modules can be
integrated into the system for audience demographic targeting! The
media formats supported include Real Media, Windows Media, MP3,
MPEG-1, MPEG-2, and more. It is optimized for the L.A.M.P. platform.

DVTS (Digital Video Transport System) sends and receives DV data using the Internet. It consists of dvsend and dvrecv - dvsend receives DV data via IEEE1394, and sends it to dvrecv using IP, while dvrecv receives DV/RTP packets, and sends DV data using an IEEE1394 interface. Using DVTS, high quality realtime video meeting can be achieved. It consumes about 8-35 Mbps of network bandwidth. Supported platforms are FreeBSD4.x, MacOSX, and Linux.

RHEED for Linux is designed to aquire data from
RHEED (Reflection High Energy Electron Diffraction)
images in Molecular Beam Epitaxy and for
controlling an electron beam gun. It is possible to
determine growth rate of a semiconductor crystal
from RHEED-Oscillations, to aquire Lines Of Interest
(LOIs) in realtime, and develop incident angle
dependent intensity curves. The Electron Beam
Gun EK35BR from Staib Instruments is supported.